Ah! I see. What will explain the movement of the stars will explain the movement of the sun.
I think you will find it so.
There is only one way by which I can account for this—they must all turn round the earth. Is that it, father?
Everybody used to think so.
But what surprises me is this; as the stars are turning round us, none get before or behind the others. They keep the same distance apart.
Do you not know that all the stars are stuck in a huge mass of blue stuff, called the sky, and that when the sky turns all of them must turn with it, and, unless they tumble out, they must keep in their places?
O, father, you are joking.
Well, then, if they are not joined together, why do they move so uniformly?
That I cannot tell.
No two of the stars are of equal distance from us. They are all scattered through space, like a lot of marbles in a scramble.